NEED HELP ON 17,18,19,20,21,22,23. ONLY IF YOU ARE POSITIVE ABOUT THE ANSWER!!!!
1 answer:
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Answer:
1.274 moles
Explanation:
The equation for the reaction can be represented as follows:
⇄
+
K = 0.060
K =
Concentration of =
Concentration of =
Concentration of = 0.398 moles
If we construct an ICE table for the above equation; we have:
⇄
+
Initial 0.398 0 0
Change - x + x + x
Equilibrium (0.398 - x) x x
K =
K =
K =
0.060 =
0.06(0.398-x) = x²
0.02388 - 0.060x = x²
x² + 0.060x - 0.02388 = 0 (quadratic equation)
a = 1; b= 0.06; c= -0.02388
Using quadratic formula;
=
=
=
=
=
= or
= or
= 0.1274 or -0.1874
We go by the positive value which says:
[x] = 0.1274 M
number of moles = 0.1274 × 10.0
= 1.274 moles
∴ the number of moles of Cl₂ produced at equilibrium = 1.274 moles
Answer:
C. pH values are different because the solution partially ionizes and the HCl solution ionizes 100 percent.
Explanation:
Strong acids are the acids which completely ionizes in the solution while weak acids are the acids which ionizes partially in the solution. They exists in equilibrium in the solution with their respective ions.
Thus, strong acids furnish greater concentration of protons as compared to weak acid when same concentration of both types are taken.
<u>Also, pH is the negative of the logarithm of the hydrogen ions. Thus, hydrogen ion concentration for both acids are different and thus pH will be different.</u>